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Cowell returned for a third season of The X Factor in September 2013 alongside Demi Lovato, while Britney Spears and L. Reid announced they would not be returning and were replaced by Kelly Rowland and Paulina Rubio.
Cowell's last act Alex & Sierra won the season, marking Cowell's second season as the winning mentor after he won with Melanie Amaro in 2011.
This season launched another one of Simon's groups into worldwide fame, the group is known as Fifth Harmony.
He is currently appearing on the fourteenth series of the UK's The X Factor, and recently appeared on the twelfth season of America's Got Talent and the eleventh series of Britain's Got Talent.
In 20, Time named Cowell one of the 100 most influential people in the world.
The X Factor Australia launched in 2005 on Network Ten and it featured Mark Holden, Kate Ceberano and John Reid as the show's judges, but was cancelled after just one season due to poor ratings.
However, the show returned in 2010 and performed strongly on the Seven Network until its eighth season in 2016, when its ratings declined.Cowell is the principal founder and chief executive of the British entertainment company Syco.